Ford Mustang (1999-2004) Service Manual: Transmission Description (Description and Operation)
The 4R70W has the following features:
- Wide ratio gears
- Four speeds
- Rear wheel drive
- Automatic
- Electronic shift
- Torque converter clutch control
- Line pressure controls
The transmission uses Ravigneaux-style double-pinion gearset with two bands, one one-way roller clutch, one mechanical diode and four friction clutches to produce four forward gears and Reverse.
4R70W Automatic Transmission

Automatic Transaxle/Transmission
General Specifications
a - MERCON V is not interchangeable at this time with the current MERCON
fluids. Check the
transmission fluid level indicator to determine the correct fluid and refer to
the ...
Identification Tags
All vehicles are equipped with a Vehicle Certification Label, located
on the driver side door lock post.
For correct transmission identification, refer to the code in the space
marked TR.
...
Other materials:
Diagnostics
Special Tool(s)
Transmission Fluid Pressure
Gauge
307-004 (T57L-77820-A)
Air Test Plate, Transmission
307-246 (T92P-7006-A)
Alignment Gauge, TR Sensor
307-351 (T97L-70010-A)
Breakout Box, EEC-V Control
S ...
Idle Air Control (IAC) Valve - Cobra
Removal and Installation
1. Disconnect the idle air control (IAC) valve electrical connector.
2. Remove the bolts, the IAC valve and the gasket.
3. NOTE: Install a new gasket if necessary.
To install, reverse the removal procedure. ...
Installation
1. Install the bearing, snap ring, hub and dust shield. For additional
information, refer to Wheel
Hub-Cobra in this section.
2. Install the knuckle.
1. Position the knuckle on the lower suspension arm and bushing.
2. Install a new bolt and a new nut. Do ...
